Patenting Costs article: How much does it cost to get a patent? $5-8k total (US Patent issued), depending on what kind (design or utility), how complex, and in which countries patent protection is sought.
The basics on how to start and conduct a prior art or patent search to find out if an invention is novel and non-obvious. By Carson Patents, USPTO Registered Patent Agent, Gregory Carson.
Patent Agent Legal Services? When it comes to legal rights, in pertinent part, property rights, there are licensed professionals who offer help in exercising or protecting your rights. Lawyers. For patents there are patent practitioners (agent or attorney) to deal with these special rights.